Big Head Mode
Take out cryptographic sequencer. Once out, hold both triggers, and rotate sticks in opposite directions, you’ll have a big head and your enemies.

Play in any costume, even before finishing the game.
Press the following combination on the Main Menu screen (after you have selected your save slot): – Left, Left, Down, Down, Left, Left, Right, Up, Up, Down. You will get an audio confirmation and when the game continue, you will get the option to select your favorite skin.

PlayStation 3

Code to Unlock Every Skin

Press the following combination on the Main Menu screen (after you have selected your save slot):

Left, Left, Down, Down, Left, Left, Right, Up, Up, Down.

Big Head Mode
Use the Cryptographic Sequencer, hold down all shoulder buttons (don’t let go), rotate the left stick counter-clockwise and the right stick clockwise. After a few seconds the mode will activate.

Something is lurking in the shadows in Arkham city. A sinister presence looms behind every corner. Welcome to Arkham City the Jokers new stomping ground. Citizens of Gotham, patrons of Arkham welcome to a new playground. This is Batman like you have never seen him before. Discover how deep the rabbit hole goes. Uncover tips and cheats for the "Batman: Arkham City" as well as all things Batman.

The Joker is waiting. Batman has been summoned. And all hell is about to break loose. Get your Gotham fix and become the vigilante this city needs. A word of warning, this site contains spoilers, game cheats and will take you into the dark world of Batman. You will learn just how stable the Joker's cracked mind really is. Enter if you dare.